1970891004 has 24 divisors (see below), whose sum is σ = 4600331008. Its totient is φ = 656737200.

The previous prime is 1970891003. The next prime is 1970891009. The reversal of 1970891004 is 4001980791.

It is a happy number.

It is a super-2 number, since 2×1970891004² = 7768822699296256032, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1970891003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10029 + ... + 63579.

Almost surely, 2^1970891004 is an apocalyptic number.

It is an amenable number.

1970891004 is an abundant number, since it is smaller than the sum of its proper divisors (2629440004).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1970891004 is a wasteful number, since it uses less digits than its factorization.

1970891004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56625 (or 56623 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 39.

The square root of 1970891004 is about 44394.7181993534. The cubic root of 1970891004 is about 1253.7786468062.

The spelling of 1970891004 in words is "one billion, nine hundred seventy million, eight hundred ninety-one thousand, four".